Quote:
Originally Posted by dieseldiehard
It will work if you wire it properly!
To prove it, I have an '85 turbo engine in my '79 300TD with a working tach (my clock/tach portion of the instruments came out of an '83 donor car) I ran all the wires thru the firewall using some scrap wires I bought somewhere. The pick up coil that senses the pulses at the crank balancer has to be a MB shielded cable, get it off a wrecked car because a new one is buck$
The only problem I ran into was finding 12 volts to power the tach. I got it off a lead that goes hot when the ign switch is "on" - thru a 2 amp fuse to be safe.
I believe all the engines use the rotating magnetic pin on the crank balancer, if you don't have that on your balancer then you will have to find a suitable balancer and swap it (not impossible but a nasty big job compared to the rest of the task!)
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His stock pickup should be good to go. As far as finding switched power, I would take power from Sun Roof at the fuse block. You tap into it from the fuse area or go underneath the dash and tap into it from below the block. Although there is limited room underneath, there are several lead wires connected to the block by philips screws. The sun roof power lead is located on the left corner nearest the wheel well.